The Model of Gas-Discharge Nonneutral Electron Plasma

TL;DR

This paper presents a comprehensive model of gas-discharge nonneutral electron plasma that accounts for diocotron instability effects, accurately describing electron sheath characteristics and discharge behavior in various geometries, including the influence of anode misalignment.

Contribution

The paper introduces a new model that captures the nonlinear processes limiting electron density and quantitatively describes the impact of anode misalignment on electron sheath in gas-discharge plasmas.

Findings

Model accurately describes electron sheath in magnetron geometries.

Quantitative analysis of anode misalignment effects.

Applicability of the model to various discharge configurations.

Abstract

The model of gas-discharge nonneutral electron plasma has been considered, in which the electron density is limited by non-linear processes initiated by diocotron instability and it does not depend on the mechanism of electron transport across the magnetic field. The model describes well the characteristics of electron sheath and the current characteristics of discharge both, in magnetron geometry and in the geometry of inversed magnetron, and it allows us to describe quantitatively the influence of anode misalignment on the discharge electron sheath for the first time. The scope of applicability of the proposed model, as well as its relation with other models of electron sheath is studied.